Service and maintenance
23
Fixture readouts
DMX input signal
The
DMXL
menu lets you view the DMX values received on each channel. If the fixture does not behave as
expected, reading the DMX values can help you troubleshoot the problem.
Fixture status
The MAC 401 gives fixture status readouts in the
INFO
menu:
• Current software/firmware version information is available for the main processor in the base, and for the
processors in each of the installed LED modules (one or two).
• The
POHR
counters display hours with power on. The
RSET
counter displays hours since the counter
was last reset, and the non-resettable
TOTL
counter displays hours since the fixture was manufactured.
• Temperature readouts from the main PCB in the base as well as the average temperature of driver and
pixel (i.e. LED) PCBs in the head are available. In each case, you can view the current temperature, the
maximum temperature reached since the readout was last reset, and the maximum temperature reached
since manufacture.
Lubrication
In general, the MAC 401 does not require lubrication. However, depending on use conditions, the moving
parts in the head and zoom mechanisms may eventually require reapplication of lubricant. Excessive noise
during pan/tilt and zoom movement is a sign that lubrication may be required. This operation can be carried
out by a Martin service partner if necessary.
Fuse replacement
Warning! Disconnect from power before replacing a fuse. Replace fuses with ones of the same type
and rating only. Never bypass or bridge a fuse.
The MAC 401 is protected by two 10 AT mains fuses located in fuseholders next to the power cable entry
(see Figure 1 on page 7).
To replace a fuse:
1. Isolate the fixture from power.
2. Use a flathead screwdriver to open the fuseholders and remove the fuses for testing or replacement.
3. Replace defective fuses with ones of the same type and rating only. Replacement fuses are available
from Martin.
4. Reinstall the fuseholders before reapplying power.
If a fuse blows repeatedly, disconnect the fixture from power immediately and consult your Martin supplier.
